OK, So i have a '99 MB3 1.5 Vtec when pulling away/accelerating hard in 1st/2nd gear it's almost as if i have no power up till 4k rpm then ill get a burst then nothing then another burst. Its not Vtec kicking in its as if it sometimes dosent work at all its weird to try and explain!!!! some times its fine sometimes its crap!!! any ideas???? Cheers guys Andy